DE29706298U1 - Grinding block - Google Patents

Description

j PATENT ATTORNEYS ,·*..·*. .**. I .".'"J D-33330Gütersloh, Vcnnstruße9

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·*■ Dipi.-ing. Gustav Moldau ·· ·· ... ...

Dipl.Phys. Dr. Hans-Jochen Strauß Date: 8.04.97

Dipl.-lng. Hubert FlÖtOttO Our reference: F 699-hF

Mister

TiIo Flöttmann

Borcheltsweg 5

D-49545 Teckienburg (Brochterbeck)

Sanding block

The invention relates to a sanding block consisting of a block-like structure which is surrounded by an abrasive and is hand-held for working on surfaces.

Such a sanding block known from the state of the art consists essentially of a block-like structure made of cork or other, softer materials. Sanding sponges coated with an abrasive are also known. The sanding block, for example made of cork, is wrapped in sandpaper, with the sandpaper then being held by the hand to create a sanding surface with which fine finishing or regrinding can be carried out. The sanding block also enables areas on objects to be sanded.

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can be made accessible in order to carry out sanding work in particular. When working on surfaces, for example painted surfaces or wooden surfaces, it is unavoidable that fine sanding dust is produced when working on these surfaces with the sanding block. This fine sanding dust adheres to the surface due to the electrostatic charge and is therefore difficult to remove from the surface. This then requires the surface to be cleaned with aids so that the surface can be reworked. This creates a considerable amount of dust, which forms a deposit, particularly in rooms, which is very difficult to remove.

It is therefore the object of the invention to further develop a commercially available hand-held sanding block in view of the prior art shown, in particular in such a way that the development of dust during the processing of surfaces is greatly reduced.

This object is achieved according to the invention in that the block has means for connecting to a suction device, so that when the block is guided, it absorbs the grinding dust that is generated. Due to this design, a hand-held grinding block offers the possibility of sucking the grinding dust that is generated when working on surfaces directly into the grinding surface, whereby the resulting dust is taken directly into a suction device. For this purpose, it is advisable to connect a flexible hose from an industrial vacuum cleaner or a hand-held vacuum cleaner to the suction nozzle, for example, so that the resulting dust development is directly prevented, namely at the point where the dust is generated.

In an advantageous development of the invention, the means essentially consists of an intake nozzle onto which a hose of a suction device can be attached. The intake nozzle is molded onto the commercially available grinding block so that there is a connection option here in order to connect the grinding block to a suction device.

connect. In order to capture the dust that is generated in a targeted manner, channels are arranged in the block that extend from the intake port into the surface of the block facing the grinding surface. Main channels extend horizontally in the block and are directly connected to the intake port, whereby, in order to collect the dust directly from the grinding surfaces, individual channels branch off from the main channels, which open into the underside and the front of the block. In this way, the grinding block, which is surrounded by sandpaper, for example, "whereby the sandpaper can be pierced to increase the permeability of the dust at the exiting channels, can collect the dust that has been produced on the surface directly into the block when the surface to be sanded is passed over. This can be done on one of the side surfaces, for example, whereby a front-side suction option is also considered, so that, for example, a fold can be worked on from the front and from the underside with such a suction-capable sanding block.

According to a particularly advantageous development of the invention, the block can be inserted into a recessed core of a sanding sponge. The sanding block according to the invention can also be used, for example, to insert a foamed material such as a sponge in the middle area in order to also carry out targeted suction due to the porous material of a sanding sponge. The sanding sponge has aligned through holes that run transversely to the extension of the core so that the dust that accumulates can be sucked out directly through it. For this purpose, the holes correspond to the respective channels of the block when the block is inserted.

An embodiment of the invention is explained in more detail using the following figures, in which:

Figure 1: A perspective view of the inventive
sanding blocks;

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Figure 2: A partially sectioned side view of the grinding block according to the invention;

Figure 3: A perspective view of a grinding

sponge in which there is a recessed soul. '.--.·

Figure 1 shows the sanding block ₁₁ according to the invention, which essentially consists of a block-like structure 2. This block-like structure 2 can be surrounded, for example, with an abrasive (not shown in detail), such as sandpaper. The sanding block 1 is handled by hand on the surfaces to be worked on. As can be seen from Figure 1, the block has means 3 for connection to a suction device (not shown in detail), so that when the block 1 is guided, it collects the sanding dust that arises. The means 3 essentially consist of a suction nozzle 4, onto which a hose (not shown in detail) of a suction device can be attached.

The connection piece 4 extends into the inner core of the block 1, as can be seen in particular in the side view of Figure 2. Channels 5 and 6 are connected to the suction piece 4, which extend from the suction piece 4 into the surface of the block 1 facing the grinding surface 7. As can be seen from the side view of Figure 2, the main channels 5 extend horizontally in the block 1, with these channels 5 opening directly into the suction piece 4. Individual channels 6 branch off from the main channel 5, which open into the underside 7 and the front side 8 of the block 1. ;

According to a particularly advantageous further development of the invention, as shown in Figure 3, the grinding block 1 according to the invention can, for example, be inserted into a recessed core 9 of a grinding sponge 10 in order to use the suction effect for such grinding bodies. The

Core 9 over the entire interior of the sanding sponge 10, so that the sanding surface can be vacuumed. The sanding sponge 10 has aligned, continuous holes 11 that run transversely to the extension of the core 9, so that the dust that accumulates can be vacuumed directly through them. For this purpose, the holes 11 correspond to the respective channels 6 of the block 1 when the block 1 is pushed in.

If, for example, the underside 7 of the sanding sponge 10 is exhausted in terms of the abrasive, the sanding sponge 10 can be rotated by 180° so that the surface then becomes the sanding side and the corresponding channels 6 of the block 1 are aligned with the holes 11 of the sanding sponge 10.

Claims (1)

PATENT ATTORNEYS."..". &Ggr;":!. l'l .' '-VmiOGiilcrsluh. Vennstraflef? II "I ' II "I' * **&idigr;&idgr;'l'clcfon: (1)5241)13054 Dipi.-Ing. Gustav Moldau· Dipl.Phys. Dr. Hans-Jochen Strauß Date: 8.04.97 Dipl.- Ing. Hubert FlÖtOttO Our reference: F 699-hF Protection claims 01. Sanding block, consisting of a block-like structure which is surrounded by an abrasive and is hand-held for working on surfaces, characterized in that the block (1) has means (3) for connection to a suction device, so that when the block is guided, it absorbs the resulting sanding dust. 02. Grinding block according to claim 1, characterized in that the means (3) essentially consist of a suction nozzle (4) onto which a hose of a suction device can be attached. 03. Grinding block according to claim 2, characterized in that channels (5) and (6) are arranged in the block (1), which extend from the intake port (4) into the surface of the block (1) facing the grinding surface (7). 04. Grinding block according to claim 3, characterized in that main channels (5) extend horizontally in the block (1) and are directly connected to the intake port (4). · 05. Grinding block according to claim 4, characterized in that individual channels (6) branch off from the main channels (5) and open into the underside (7) and the front side (8) of the block (1). . 06. Grinding block according to one or more of the preceding claims 1 to 5, characterized in that the block (I) can be inserted into a recessed core (9) of a sanding sponge (10). 07. Sanding block according to claim 6, characterized in that the sanding sponge (10) has aligned through holes (II) which run transversely to the extension of the core (9). 08. Grinding block according to claim 7, characterized in that the bores (11) correspond to the respective channels (6) of the block (1) in the inserted state of the block (1).